Established in 1985, Diplomatic Language Services is one of the largest private language service providers in Washington, D.C. It offers familiarization programs, enhancement training and language skills testing services for government, commercial and academic clients. The agency employs more than 150 language professionals who provide proficiency-based foreign language training and curriculum development services. Its clients include AES Corporation, CASA Aircraft, Exxon Mobil and the New York Times. The agency provides maintenance language training services to strengthen language abilities. It also offers job-related and custom-designed listening and reading courses. The agency provides various online resources, including language lessons and translating dictionaries. Diplomatic Language Services is located in Arlington, Va.